<template>
  <div id="app">
    <div>
      <span>姓名:</span>
      <input type="text" v-model="uname" />
    </div>
    <div>
      <span>年龄:</span>
      <input type="number" v-model.number="age" />
    </div>
    <div>
      <span>性别:</span>
      <select v-model="sex">
        <option value="男">男</option>
        <option value="女">女</option>
      </select>
    </div>
    <div>
      <button @click="add" :id="id">添加/修改</button>
    </div>
    <div>
      <table border="1" cellpadding="10" cellspacing="0">
        <tr>
          <th>序号</th>
          <th>姓名</th>
          <th>年龄</th>
          <th>性别</th>
          <th>操作</th>
        </tr>
        <tr v-for="(item, index) in arr" :key="index">
          <td>{{ index + 1 }}</td>
          <td>{{ item.uname }}</td>
          <td>{{ item.age }}</td>
          <td>{{ item.sex }}</td>
          <td>
            <button @click="del(index)">删除</button>
            <button @click="edit(index)">编辑</button>
          </td>
        </tr>
      </table>
    </div>
  </div>
</template>
<script>
export default {
  data() {
    return {
      uname: "",
      age: "",
      sex: "",
      arr: [],
      id: "add",
    };
  },
  methods: {
    add(e) {
      // console.log(e.target.id);
      if (e.target.id === "add") {
        if (this.uname.trim() === "" || this.age === "" || this.sex === "")
          return;
        this.arr.push({
          uname: this.uname,
          age: this.age,
          sex: this.sex,
        });
        this.uname = this.age = this.sex = "";
      } else {
        this.id = "add";
        this.arr[e.target.id].uname = this.uname;
        this.arr[e.target.id].age = this.age;
        this.arr[e.target.id].sex = this.sex;
        this.uname = this.age = this.sex = "";
      }
    },
    del(id) {
      const a = this.arr.findIndex((item, index) => index === id);
      this.arr.splice(a, 1);
    },
    edit(id) {
      this.id = id;
      const a = this.arr.find((item, index) => index === id);
      this.uname = a.uname;
      this.age = a.age;
      this.sex = a.sex;
    },
  },
};
</script>
